Package-sealing device



Feb. 16 ,1926. 1,573,669

C. W. H. BOLINGBROKE PACKAGE sEALI-NG DEVICE v Filed Feb. 19, 1924 v 4sheets-sheet 1 I @QQ/009 if eo/ceocaoooe'oe if Mylan @#Wwww gi Feb. 16,1926.

c. w. H. BQLINGBROKE PACKAGE SEALIING DEVICE 4 Sheets-Sheet 2 Filed Feb.19 1.924

Feb. 16 ,1926. y 1,573,669

C. W. H. BOLINGBROKE PACKAGE SEALING DEVICE Filed Feb. 19, 1924 4sheetssheet 6 PACKAGE SEALING DEVICE Filed Feb. 19 1924? 4 Sheets-Sheet4 Patented Feb. 16, 1926.

m W. H. BLINGBROKE, OFLOSSANGELES, CALIFORNIA.

ramen-ammo navxcn.

Application mea mmm-y 19, 1924'. bsoma No. 693,913.

To all `whom it may concern.'

Be it known that I, CHARLES-W. H. Bor.-

INGBROKE, a subject of the King of Great device to assist in the rapidhandling. of

Britain, residing at Los Angeles, in the county of Los Angeles andStateof Call; fornia, have invented new and useful lmprovements inPackage-Scali Devices, of which the following is a speci cation.

)My invention relates to package sealing devices, and consists of thenovel features herein shown, described and claimed.

An object of my invention is to make a packagesA to be wrapped and'sealed lwith para'in paper.

Another object of` my invention is to make I a device having heatersadapted to soften or melt the `wax or. parailin pa er so that when apackage is wrap ed an applied to' the heaters the wax will orm a bond tohold the edges ofthe paper in a sealed position.

Further objects and advantages will appear from the drawings andspecifications.

The drawings illustrate the invention.

l Figure 1 is a top plan view of a ackage wrapping and seali machine emlying the principles of my invention, the view being taken lookingdownwardly in Figs. 2 and 3.

Fig. 2 is a sidev eleva 'ion looking in the 1 .direction indicated bythe arrow 2 1n Figs.

1 and' 3. y

Fig. 3 is a vertical line 3 3 of Fig. 1. l

Fi 4 is a fragmentary vertical sectional deta onthe lines of Figs, land3..

Fig. 5 is a fragmentary sectionaldetarl on the lines-5 5 of Figs. 1 and'7.

Fig. 6 is a fra entary sectionaldetail on thelinesfo Figs. 1 and 7. Fig.7 is a fragmentary end elevation cross section on the looking in .thedirection indicated by the arrows 7 in Figs. 1 and 2.

Figs. .8, 9,' 10, 11, 124and 13, are diagrammatic views illustrating theoperation of wra ping and .sealing a package. von the mac meA shown inFigs. 1 to 7.

The details of the package wrapping and sealing device are as follows:

` brackets having parallel ots 16 through The machine is` adapted to bemounted upon a flat table top boards 2 and 3'are rigidly securedtogether by cross pieces 4 and a cooling top 5. An-

brackets 6, 7, 8 and 9 are mounted upon the top 5, the horizontal rtionsof the or bench 1, the side which screws 11 are inserted intothe top 5so that the brackets may be moved 'inwardly or outwardly.

Adjustable side boards 12 and 13 having sheet metal linings 14 and 15are secured to the vertical arms of the 'brackets 6, 7, 8 and 9. Theforwlard end of the lining 14 extends beyond the board 12 and is curvedoutwardl to make a guide 16. The forward end o the lining 15 is curved'outwardly to make a support 17 for the leaf springs 18, said springsbeing secured to the support are bowed inwardly and the rear ends of thesprings are bent outwardly to form the guides 20 extending looselythrough holes in the linin within the llnings 14 and 15 forms a cool? intable 21. y

he end heaters 22 and 23 are mounted in front of the cooling table 21.The Work table 24 is mounted in front of the heaters 22 and 23 andtheside heater 25 is mounted in front of the vwork table 24 and at theextreme forward end of the machine.

The details of the heaters 22 and 23 are as follows: Plates 26 and 27overlap the side boards 2 and are secured to the side boards 2 by -bolts28, said plates being inside of the ends Cross bars 29 and 30 of theside boards. connect the plates 26 and 27 and have in- 'wardly extendiribs 31 and 32 and 33 and 34 forming sli eways 35 and 36 for the boards37 and 38. Bearing blocks 39 and extend downwardly from the boards 37and38 and a lscrew 41 has right and 'left threads extending through thebearing blocks 39 and 40 and the-screw is held from endwise movement byset collars 42 and 43, one end of the screw being mounted in the platev27 and the other end of the screw extending through the plate 26 andahandle 44 is fixed u on the screw 41 outside of the -plate 26 so t atbymanipulating the handle 44 the boards 37 and 38 may be moved to orfrom each other. Blocks 45 and 46 of heat insulation, such as fibre, aresecured to the boards 37n and 38 and extend outwardly beyond the outeredges ofI the boards.

Castings 47 and 48 form housings for the heating elements 49. Thecasting 48 has a flan e 50 resting upon the heat insulation 45 anconnected to the board 37 by screws 51. The castings 47. and 48 aresecured together by screws 52 and form chambers 53 17 by rivets or smallbolts 19 and the springs 15 and board 13. .The lspace A in which theheating elements 49 are mounted. The blocks 54 of heating insulationmaterial is placed in the chambers outside of the heating elements 49 toreduce the radiation of the heat outwardly.

The castings 47 and 48 of the heatei 22 are mounted upon the heatinginsulation material 46 and secured to the board 38 by screws 55.

The heating plates 56 and 57 are mounted inside of the castings 48. Rods58 and 59 are secured to the plates 56 and 57 and cxtend throughopenings in the castings 47 and 48 and have nuts 60 upon their innerends to limit the inward movements of the plates. T he outer ends of therods 58 and 59 bear -againstleaf springs 6l and 62 so as to yieldinglymount the hea-ting plates 56 and 57, the tensions of the springs beingexerted to move the plates inwardly away from the castings 48. Thesprings 61 and 62 are secured to the ends of a cross bar 63 and thecross bar 63 is mounted upon a stud bolt 64 fixed in the casting 47 andhaving a nut 65 on its outer end so that by manipulating the nut 65 thetensions of the springs may be regulated.

Sleeves 66 are placed against the upper ends of 'the castings 48, coverplates 67 of heating insulation are vplaced upon the sleeves 66 andextend outwardly and the covers are held in place by cap screws 68inserted through the plates 67 and through the sleeves 66. Sleeves 69 ofheat insulation material fit against the outer sides and lower ends ofthe castings 47 and housings 70 fit against the sleeves 69 and are heldin place by screws 71 inserted through the housings and through thesleeves and tapped into the castings 47, said housings having verticalplates extending upwardly and then horizontal portions extendinginwardly and resting upon the plates 67 so as to completely enclose theheating elements.

The lower edges of the plates 26 and 27 are cut away to form air inlets72 for cooling parts. Boards 73 and 74 are laid crosswise of the plates26 and 27 and spaced apart and rigidly secured in place, a spacing boardfits between the boards 73 and 74 and rabbet joints 76 and 77 areformed, said board 75 fitting between the castings 48 of the heaters 22yand 23 and the length of the board 75 determines the length of packagethe machine is set to handle. If a dif-` ferent package is to be handledthe handle 44 is manipulated to move the heaters apart to release theboard 75 andthe boardv75 is rclnoved and a longer or shorter boardinserted. The switch transformers 78 and 79 are mounted against theout-er face of the plate 27. A guard 80 is secured tothe frame andextends outwardly and alongside of the switches to protect the switches.

The side boards 81 and 82 are lapped upon the boards 81 and 82 againstthe board '0 over the forward ends of the plates 26 and 27 and securedin place by bolts 83, said boards 81 and 82 being substantially llke theboards 2. The working board 24 fits '74 and has front small perforations84 and rear larger pcrforations 85. A heat insulating board 86 of fibreor the like is mounted upon the boards 81 and 82 against the workingboard 24. The upper and lower edges of the boards 8l and 82 are cut awayto forni openings 86 and 87 for 'the circulation of all'.

The details of the heater 25 are as follows:

The forward ends of the boards 81 and 82 are cut down halt way fromtheir to s, the cut extending soniedistance from t e extreme forwardends to form notches for mounting the heaters. A substantial board 88 ismounted crosswise in the notches and connects the boards 81 and 82. Asecond board 89 extends upwardly from the inner end of the board 88. Acasting 90 `fits upon the board88 yagainst the board 89, a heatinsulation board of fibre or the like 91 rests upon the casting 90 andflanges 92 and 93 extend upwardly from the edges of the casting 90. Theheating element 99 is mounted upon the fibre board 91 within the flanges92 and 93, the casting 100 covers the heating element 99 and hasdownwardly extending flanges'` to match the flanges 92 and 93.

A finished working plate 101 is lmounted upon the casting 100 and screws102 extend 100 downwardly through plate 101 through the flanges of thecasting 100 and are tapped into the flanges 92- and 93. An end board 103fits against t-he ends Aof the boards 81 and 82 and extends as high asthe platev 101. A 4105 small roller 104 is mounted with its pintles inthe board 103 and the board 89 to form a finished end for the heater 25.

Clamps 105 have attaching plates 106 secured to the boards 81 and 82 andthe clamp- 110 ingarms 107 extend downwardly from the plates 106 againstthe end of the table top 1 and the bearing 108 has a screw 109 to engageunder the table top and clamp the machine firmly in place upon the tabletop. 115 A housing 110 is secured to the right hand clamp 105 andlextends outwardly and upwardly and inwardly to cover the electricalconnections 111 leading to the heater.

The elements of the heaters 22, 23 and 25 120 may be electricallyconnected to andv from the switches 78 and 79 in the usualway.

Referring to Figs. 8 to 13, the operation is as followsz.

Assuming that the package 112 to be 125 wrapped and sealed is arectangular prism, such as a pound of butter in a box or carton, sheet113 of araiiined wax paper is held in the hand with one edge of the pa)er upon the heater 25 and almost instantly t e pack- 13 age is placedupon the edge of the parafined wax pa er lying upon the heater, then theparafline wax paper with the box superimpsed thereon is drawn`backwardly and.

with a rolling backward motion the paper is wrapped around the package,as shown in Figs. 9 and 10. The package is then drawn forward over theworking board and onto the heater and drawn across-the heater with asideways motion, which sealsA the parafiined wax paper completely aroundthe box or carton.

Then the operator folds the paper against the ends of the box, as shownin Fig. 12, and places the package upon the board 74 and` presses itbackwardly between the yielding heating plates 56 and 57 of the heaters23 and 22 and the'box .remains in thisv osition long enough to melt thewax'upon t e various overlapping portions vat theends of the package.If' the heat is high enough the package may move right `through thever-` tical heaters.

Then the packagey is moved backwardly between the lining 'p14 andsprings 18 upon the cooling board 21 and the tension of the springs 18willpress the folded ends tight enoughto form a good seal and as thework goes onvthe sealed packages will pass backwardly vupon the board 21between the lates 14v and 15 and cool. The rear ends the plates l4ja'nd15 may be' wider apart than the forwardends so that the stack ofpackages move backward easily.

It will thus ly manual and partly mechanical. As'shown in Fig. 8, one.end of the yparaliinv paper is slightly heated, and as shown inFig. 9,the package is gummed thereto. After rolling .the package so as ,toencase it inthe paper asshown in Fig. 10, the outsidel end is gummed byapplication tothe hot late 25 as shown in Fig. 11. The sides of t epackage are then folded inward, as indicated in Fig. 12 and the completepackage pressed through thehot plates 56 and 57, aszshown in Fig. 13, toseal the sides, and subsequently are pressed to the cooling ltable atthe right hand end of Fig. 13. p

In working from the heater 25 to the heaters 22 and 23 over the board 24rubbing the sealed portions of thepackage over ^the board 24 andover theholes 84 and 85 will remove any lumps or surplusage ofyparaffin from thepackage.y

Thus I have produced a package wrapping and sealing device comprising aframe, means forming 'a flat hot'plate at-the forward end of the frame,a" working board Aname to this specification.

extending backwardly from the .hot late,

two hot plates back ofthe working be seen that I.have'inventedv a methodof sealing packages which kis partard vertically and yieldingly mountedand facing each other, means for adjustingthe dis'- tance between thevertical hot lates, a 'cooling table extending backwar ly from thevertical hot plates and having sides adjustably mounted, and a series ofbowed springs attached to the forward end of one side to press againstthe ends of a package as it passes to the cooling table.

In the specification and claims where I .partin from the spirit of myinvention as claime I claim:

i 1. A package wrappingland sealing de- .vice comprising a frame, meansforming -a l fiat hot plate at the forward end of the frame, al workingboard extending backwardly from the hot late, two hot plates- 'aback ofthe working oard vertically and yieldinglymounted and facing each other,means for adjusting the distance between the vertical hot lates, acooling table extending backwar y fromthe verticalv hot plates andhavingv sides adjustably mount.

ed, and a series of bowed springs attached to\ the forward end of oneside .to press against the Vl-ends of a package as it passes to thecooling table.

2. A ackage sealingV device fcomprising a frame having a substantiallycontinuous flat upper surface extending from the front to the rear endof the frame, having means forming a Hat hot plate at the forward end ofthe frame, a working board extending i backwardly from the hot plate,two vertical hot plates on the back of the working board facing eachother, a ooling table extending backwardly from the vertical hot plateshaving vertical sides extending substantially parallel and a series ofbowed springs attached to the forward end of one of the sides of theAcooling table to press against the ends of a package as it passes to theysaid cooling table.

3. In a wrapping device, a frame, a hot plate at the forward end of theframe, said hot plate being constructed with boards extending crosswaysof the frame from a box like structure, lower and upper castings in 'thebox, heating elements mounted in ythe castings, means to insulate theheating elements from the castings and a finished working plate'on topof the uppercasting.

lIn testimony whereo'I have signed my CHARLES w. H. BOLINGBROKE.

